Answer: Consultant
Explanation:
Consultant is the person who plays the role assisting any person or organization by providing them advises, alternatives, information etc in a particular field such as organizations .They feature as a facilitator , educator and assistant so that the other party can make proper decision accordingly with the provided knowledge.
According to the question, social worker is playing the role of the consultant as he is sharing the information about the behavioral support with positivist factor to other .He is educating people to known the importance of this subject and making them understand.